Merge branch 'bugfix/btdm_singular_sleep_time_corr_for_v3.1' into 'release/v3.1'

bugfix/btdm_singular_sleep_time_correction_for_v3.1(backport v3.1)

See merge request idf/esp-idf!2658
This commit is contained in:
Jiang Jiang Jian
2018-06-29 18:44:20 +08:00